Time Synchronization and NTP Service

When PDomains are powered on, their clocks synchronize to the NTP server when
the system is configured to listen to NTP multicast (the default for the
current Oracle Solaris OS). If the PDomains and SPs use the same NTP
server, events logged in the Oracle Solaris OS and on the SP can
be correlated based on their time stamps. If the PDomains and SPs use
different NTP servers, their times might drift, and correlating log files could become difficult.
If you connect a domain to an NTP server other than the one
used by the SP, ensure that both are low-stratum NTP servers that provide
the same degree of accuracy.